work well in private window but dont work in normal window for Firefox

[xtmu]

I have disabled all add-on except for enhanced-github, somehow, it works only in a private window but not a normal window, anyone have an idea about such situation?

environment:

Firefox 119.0(64-bit)
Mozilla Firefox for Arch Linux 
archlinux - 1.0

console:

Use of Mutation Events is deprecated. Use MutationObserver instead. [enhanced-github line 9 > injectedScript:62:13](https://github.com/softvar/enhanced-github%20line%209%20%3E%20injectedScript)

[xtmu]

Now I find the point to reproduce this situation it's that is the login, as long as I login Github, enhanced-github and toc-bar don't work.

[niksingh710]

for me not working even on private window.
any way to check what could be the issue?